Until the LAN connectivity is sorted, don't even think beyond. Sort out the LAN first. Can u confirm connectivity at layer 2. (MAC address) if this is OK, then obviously there is filtering in ur network. Is the problem affecting only u?




On Tue, May 22, 2012 at 4:55 PM, miano skunks <miano.skunkworks@gmail.com> wrote:
It may be an issue with Realtek cards when dual booting Windows and
Linux, have a look at ->
http://www.linuxquestions.org/questions/linux-networking-3/realtek-8139-8168-8169-on-2-6-21-3-or-newer-593495/

Miano.

On Tue, May 22, 2012 at 1:47 PM, Allan Ouma <aouma@ymail.com> wrote:
> I have done all that. Still no connection. I cannot even ping my gateway.
>
> Allan Ouma
> P.O. Box 12731
> Nairobi
> 00400
> Kenya
>
> ________________________________
> From: Anthony Lenya <tlensya@gmail.com>
> To: Allan Ouma <aouma@ymail.com>
> Cc: Skunkworks Mailing List <skunkworks@lists.my.co.ke>
> Sent: Tuesday, May 22, 2012 1:21 PM
>
> Subject: Re: [Skunkworks] Ubuntu 12.04 wired connection problem
>
> Boss,
>
> ping your gateway and then
>
> do a
>
> arp -a
>
> and check if u have your routers MAC address.  If you do, then we know that
> connectivity is OK on the LAN. next check that ur not filtering traffic.
> Maybe a firewall or some other such application.
>
> u may want to shut down iptables and/or any other firewall security app that
> could be filtering this.
>
> Also check that u can resolve addresses using ur current DNSes.
>
> On Tue, May 22, 2012 at 1:13 PM, Allan Ouma <aouma@ymail.com> wrote:
>
> It is not the NIC since it works perfectly on Windows, I can see the drivers
> for the device are installed and it even has and IP address in the Network
> Connections properties (it is on DHCP). The problem is that I cannot even
> ping my router yet it has even allocated itself and IP address within my
> LAN's range.
>
> Allan Ouma
> P.O. Box 12731
> Nairobi
> 00400
> Kenya
>
> ________________________________
> From: Anthony Lenya <tlensya@gmail.com>
> To: Allan Ouma <aouma@ymail.com>; Skunkworks Mailing List
> <skunkworks@lists.my.co.ke>
> Sent: Tuesday, May 22, 2012 1:01 PM
> Subject: Re: [Skunkworks] Ubuntu 12.04 wired connection problem
>
> Is the problem the network interface or internet settings?
>
> That would be a good place to start
>
>
>
> On Tue, May 22, 2012 at 12:59 PM, Allan Ouma <aouma@ymail.com> wrote:
>
> I recently installed Ubuntu 12.04 on my Dell Optiplex 755 desktop. The wired
> connection shows that it is connected but I cannot access the internet. I
> have tried removing the resolv.conf package and enable NetworkManager but it
> still refuses to work. I am now stressed since I need this connection to
> work for some project I am working on.
>
> Any help towards solving this problem will be greatly appreciated.
>
> Allan Ouma
> P.O. Box 12731
> Nairobi
> 00400
> Kenya
>
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